/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.mpp.plan.statement.crud;

import org.apache.iotdb.common.rpc.thrift.TEndPoint;
import org.apache.iotdb.common.rpc.thrift.TTimePartitionSlot;
import org.apache.iotdb.commons.partition.DataPartition;
import org.apache.iotdb.commons.path.PartialPath;
import org.apache.iotdb.db.mpp.plan.statement.StatementType;
import org.apache.iotdb.db.mpp.plan.statement.StatementVisitor;
import org.apache.iotdb.db.utils.TimePartitionUtils;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class InsertRowsOfOneDeviceStatement extends InsertBaseStatement {

    public InsertRowsOfOneDeviceStatement() {
        super();
        statementType = StatementType.BATCH_INSERT_ONE_DEVICE;
    }

    /**
     * the InsertRowsStatement list
     */
    private List<InsertRowStatement> insertRowStatementList;

    @Override
    public boolean isEmpty() {
        return insertRowStatementList.isEmpty();
    }

    public List<InsertRowStatement> getInsertRowStatementList() {
        return insertRowStatementList;
    }

    public void setInsertRowStatementList(List<InsertRowStatement> insertRowStatementList) {
        this.insertRowStatementList = insertRowStatementList;

        // set device path, measurements, and data types
        if (insertRowStatementList == null || insertRowStatementList.size() == 0) {
            return;
        }
        devicePath = insertRowStatementList.get(0).getDevicePath();
        isAligned = insertRowStatementList.get(0).isAligned;
        Set<String> measurementSet = new HashSet<>();
        List<String> measurementList = new ArrayList<>();
        for (InsertRowStatement insertRowStatement : insertRowStatementList) {
            String[] measurements = insertRowStatement.getMeasurements();
            for (String measurement : measurements) {
                if (!measurementSet.contains(measurement)) {
                    measurementList.add(measurement);
                    measurementSet.add(measurement);
                }
            }
        }
        measurements = measurementList.toArray(new String[0]);
    }

    public List<TTimePartitionSlot> getTimePartitionSlots() {
        Set<TTimePartitionSlot> timePartitionSlotSet = new HashSet<>();
        for (InsertRowStatement insertRowStatement : insertRowStatementList) {
            timePartitionSlotSet.add(TimePartitionUtils.getTimePartition(insertRowStatement.getTime()));
        }
        return new ArrayList<>(timePartitionSlotSet);
    }

    @Override
    public List<TEndPoint> collectRedirectInfo(DataPartition dataPartition) {
        return insertRowStatementList
                .get(insertRowStatementList.size() - 1)
                .collectRedirectInfo(dataPartition);
    }

    public <R, C> R accept(StatementVisitor<R, C> visitor, C context) {
        return visitor.visitInsertRowsOfOneDevice(this, context);
    }

    @Override
    public List<PartialPath> getPaths() {
        List<PartialPath> ret = new ArrayList<>();
        for (String m : measurements) {
            PartialPath fullPath = devicePath.concatNode(m);
            ret.add(fullPath);
        }
        return ret;
    }
}
